JPH036540B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a management method for efficiently creating and erasing a user space in a TSS (Time Sharing System) data processing system.

[Conventional technology]

In the TSS, each time there is a session opening request and session termination request from a user, user space creation processing and deletion processing are performed, respectively.

In general, the number of user spaces existing in a system increases rapidly from the time TSS starts in the morning, and remains almost constant during the day in a steady state, as shown in Figure 2, which shows an example of the passage of a day. It is normal for the value to be close to the number (user max value). However, in reality, users change frequently during that time, and the reality is that user spaces are repeatedly created and deleted within a session time of about 30 minutes per user, for example.

Next, a session establishment processing method in the conventional TSS will be explained. Figure 3 is a schematic diagram of the system, where 1 is the host, 2 is the CCP (communication control processing unit),
3 and 4 represent TSS terminals, 5 represents VTAM (communication access method), 6 represents TSS manager, and 7 represents TSS user space. The operation is performed in the following steps.

When a user requests connection with an application program.
When the LOGON command is submitted, VTAM5
It is passed to the TSS manager 6 via the TSS manager 6.

The TSS manager 6 is a TSS management program, and creates a TSS user space 7 when it can accept a LOGON request.

Initialize the created TSS user space.

Initialize the operating environment for TSS users.

The TSS manager passes the terminal name and logon information to the TSS user space.

TSS user space acquires a terminal. That is, specifying the terminal name and making a connection request to acquire it.

Furthermore, the conditions specified in the logon information are checked and reflected in the session opening environment.

Session startup processing is performed, and application program processing is executed according to command instructions from the user.

The user's work is completed and the LOGOFF command is issued.

Terminates the session based on the LOGOFF command.

Disconnect the terminal from the TSS user space.

Perform space termination processing, release the resources used, and notify the TSS manager.

The TSS manager performs post-processing to delete the terminated TSS user space, that is, delete it from management.

[Problem that the invention seeks to solve]

Conventional TSS has a problem in that user space creation and deletion processes are frequently performed, each time occupying a non-negligible amount of CPU time, resulting in system overhead for each user.

[Means for solving problems]

In order to reduce the overhead caused by creating and erasing source program spaces, the present invention creates and pools a certain number of spaces in advance, and does not create spaces in response to requests from users. It is possible to allocate space from a space pool currently being used, and upon return, return it to the space pool without erasing it and make it possible to reallocate it to other requests.

The configuration of the present invention is such that, in a TSS type data processing system, at the time of TSS activation, a means for creating spaces equal to the number of TSS user spaces in a predetermined steady state, and a means for managing the created spaces. When a connection request is received from a TSS user, an empty space will be allocated from among the spaces created above, and the space will be managed as being in use, and when a termination notice is received from the space in use, the space will be allocated. will be managed as empty space from now on,
It is characterized by erasing the space created only when the TSS is stopped.

[Action of the invention]

FIG. 1 shows the session establishment process according to the method of the present invention for comparison with the conventional method shown in FIG. They correspond directly to the same numbered elements in the figure.

In the present invention, a certain number of user spaces are created when the TSS is activated, and managed as a space pool by the TSS manager. The state of the TSS user space at this time can be considered to be a state in which the terminal has not yet been determined and the logon information for establishing a session has not yet been reflected.

As shown in the steps ``to'' below, in the method of the present invention, ``When the LOGON command is input, the TSS manager 6 immediately allocates an empty space from the space pool, ``The terminal name and logon information are assigned to that empty space.'' Pass information. Allocated space is managed as being in use.

The allocated space, that is, the TSS user space, ``acquires the terminal,'' ``checks the logon information and reflects it in the session, and ``starts the session.

``When the LOGOFF command is input due to the end of the user's work, ``the session is terminated, the terminal is disconnected, and the TSS manager is notified with '' that the space is free. 'The TSS manager manages it as free space.

As described above, in the method of the present invention, the processes of TSS user space creation, space initialization, and TSS user environment initialization in the conventional method shown in FIG. Since each process of configuring is performed all at once when starting the TSS, it is not necessary when allocating free space when requesting to open an individual session as shown in Figure 1'.
Also, the space termination process is simplified to just the notification of vacancy for ′, so the overhead is significantly reduced.

〔Example〕

The details of the present invention will be explained below with reference to Examples.

FIG. 4 is an explanatory diagram of a TSS user space management mechanism according to one embodiment of the system of the present invention. In the figure, 8
is a TSS manager, 9 is a space creation unit, 10 is a space management unit, 11 is a space management table, 12 is a terminal path processing unit, 13 is a TSS user space, 14 is a terminal control task, 15 is a session control task, 16
is the command reception processing task, 17 is the TSS startup command, 18 is the LOGON command, 19 is the
This is the LOGOFF command.

First, the operator issues TSS startup command 1.
When performing a TSS boot of the system using 7.
At the same time, TSS in steady state by parameters
Give the number of user spaces. TSS manager 8
The user space creation unit 9 creates as many TSS user spaces as this number of TSS user spaces, and registers them in the space management table 11.

The space management table 11 is an application
It consists of an ID, in-use/vacant display, assignment destination terminal information, etc., and is managed by the space management unit 10.

Next, when the user inputs the LOGON command 18, the space management unit 10 displays the space management table 1.
1 and allocates one free space to the requester,
Set its busy/vacant display to "in use".
Further, the terminal path processing unit 12 notifies the assigned TSS user space 13 of the terminal name and logon information, and requests the terminal control task 14 to perform processing.

The terminal control task 14 acquires the terminal based on the notified terminal name, and executes the session control task 1.
Request processing to 5.

The session control task 15 performs session establishment processing and generates a command reception processing task 16 using the ATTACH macro.

The command reception processing task 16 is the user's
Interprets commands input from the TSS terminal and performs control. When the LOGOFF command 19 is input, the terminal control task 14 is notified and causes the session termination process to be performed.

After this session end processing, the terminal control task 14
is started and the terminal release process is performed. After this,
The TSS manager 8 is notified that the TSS user space has become vacant. In response to this, the space management unit 10 of the TSS manager 8 changes the in-use/vacant display of the corresponding space in the space management table 11 to "vacant". All spaces created by the TSS manager 8 are terminated when the TSS is stopped.

〔Effect of the invention〕

According to the present invention, the creation/deletion processing of the TSS user space is performed only when the TSS is started/stopped, and the overhead based on the creation/deletion and processing of the TSS user space during TSS operation can be eliminated.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the session opening process according to the method of the present invention, FIG. 2 is an explanatory diagram showing the change in the number of user spaces in one day during TSS operation, FIG. 3 is an explanatory diagram of the session opening process according to the conventional method, and FIG. FIG. 4 is an explanatory diagram of a TSS user space mechanism according to one embodiment of the present invention. In the figure, 1 is the host, 2 is the CCP, 3 and 4 are
TSS terminal, 5 is VTAM, 6 is TSS manager,
7 indicates the TSS user space.

Claims (1)

[Claims] 1 In a TSS-based data processing system,
At the time of starting the TSS, a means for creating spaces equal to the number of TSS user spaces in a predetermined steady state, and a means for managing the created spaces are provided,
When a join request is received from a TSS user, an empty space is allocated from among the spaces created above, and thereafter the space is managed as being in use, and when a termination notice is received from the space in use, the space is subsequently changed to an empty space. A TSS user space management method characterized by managing the space as a TSS user space and erasing the created space only when the TSS is stopped.